Laserfiche WebLink
February 22,2006 <br /> NOA Project Number: E06010A <br /> 6.0 PERCOLATION TEST INFORMATION <br /> /6.1 Percolation Test Locations <br /> A site map indicating the locations of the percolation test holes is included as Plate 1 of this report. <br /> + /6.2 Number of Percolation Tests <br /> One shallow percolation test and one deep percolation test were conducted on the Site, for a total of <br /> two tests. <br /> j6.3 Boring Preparation and Presaturation <br /> [/ The soil borings were advanced on the Site with an eight inch diameter mobile auger rig on <br /> February 10, 2006. <br /> A 3-inch diameter PVC pipe with perforations on the bottom was used to measure the drop of <br /> water in the percolation test boring. Approximately 2 inches of"pea ravel" were placed in the <br /> �fbottom of the open soil boring, then the PVC pipe was installed on top of the gravel. "Pea gravel" <br /> --- was backfilled in the annular space. <br /> Presaturation of the percolation test holes occurred on February 15, 2006. The depth of water used <br /> to pre-soak was 12 inches above the bottom of the borings. <br /> /.4 Condition of Borings After Presaturation <br /> After the 24-hour soak period, the presaturated holes were found to be intact and dry on February <br /> 16, 2006. <br /> ,,-'/6.5 Percolation Test Procedure <br /> Filk A percolation test was conducted for each boring on February 16, 2006 in accordance with the <br /> requirements of the EHD. A percolation test with a duration of four hours was performed for the <br /> shallow boring, and a test with a duration of one hour was performed for the deep boring. The last <br /> F1 half hour of the four-hour percolation test and the entire one-hour percolation test were observed <br /> by Lisa Medina, Senior Registered Environmental Health Inspector, EHD. <br /> F! <br /> Fi <br /> I1 9 <br /> F1 <br />